Photographic-plate holder.



No. 663,578. Patanted Dec. ll, I900. F. MACKENZIE &. G. WISHART. PHOTUGRAPHIC PLATE HOLDER.

(Application fllad Nov. 13, 1899.) model.) b a *1; C Q N) g R I" k N Q m Q Q g ml g i 5 IIEJ M l v Q L J Ex GJJeSK wwm N, o 0, THE NORRIS warms co, PHOTO-HTML, \VASH\NGTG UNiTED STATES PAIENT OFFICE.

FREDERICK MACKENZIE AND GEORGE VVISHART, OF GLASGOW, SCOTLAND.

PHOTOGRAPHlC-PLATE HOLDER.

SPECIFICATION forming part of Letters Patent No. 668,578, dated December 11, 1

Application filed November 13,1899. Serial No. 736,780. (Modeh) To all whom it may concern: outer part of the envelop (shown in Fig. 3) Be it known that we, FREDERICK MAOKEN- consists of a carrier, also formed of actinic ZIE and GEORGE WVISHART, citizens of the light-proof cloth or other material, having United Kingdom of Great Britain and lreturned-over edges g at the sides and one end 5 land, residing in Glasgow, Scotland, have into form grooves, which may be strengthened vented a new and useful Appliance for Oar in any well-known manner. A small portion rying and Exposing in the Camera Sensitive at h is cut away at the ungrooved end to re- Photographic Dry Plates or Films, (for which ceive a small bar 1', Figs. 1, 2, 5, and 7, to act we have obtained a patent in Great Britain, as a stop, secured on the end of the inner IO dated April 13, 1899; in Germany, dated May part, which is slipped within the outer part. 8, 1899, and in France,dated October 13,1899,) The plate I) is placed while in the dark room of which the following is a specification. within the grooves of the inner part and cov- This invention has reference to and comered by the flap e, the whole being inserted prises improved appliances for carrying and within the grooves g of the outer part, the 15 exposing in a camera sensitive photographic uncovered end of the plate entering the groove dry plates or films in a convenient manner at the end, so that all light is completely exand without danger of exposure to the ordieluded from the plate, the bar 7; entering the nary daylight. recess h.

In carrying into practice our improvements The dark cell or slide, Figs. (5 and 7, for 20 we use an actinic light-proof envelop and a exposing the plate in the camera is made of special dark cell or slide for exposing the plate book tornnone side being fitted with the usual or films in the camera. 7 sliding door j. The plate and its envelop are In order that our invention may be properly laid within the cell on the sliding door, which understood, We have hereunto appended one has a groove 7t near its end to engage with 25 sheet of illustrative drawings, in which the bar f on the covering-ilap e of the en- Figure l is a plan, and Fig. 2 a section, of velop. The other side of the cell is fitted the actinic light-proofenvelop. Fig. 3 is a with a blade-spring Zto hold the plate in posiplan of one part of said envelop, and Fig. 4 tion and may be fitted with a celluloid or is a plan of the other part, while Fig. 5 is a glass peep-hole m, by which any number or 30 section of same. Fig. 6 is a plan of the dark other mark on the plate-envelop may be read. cell or slide for exposing the plate in the cam- Theend o of the blade-spring is turned at an era opened up. Fig. 7 is a section of same angle, so that it engages with the bar i to preclosed with the exposing-door drawn open vent the envelop and plate from being (Us and also showing in dotted lines the door lodged 0n the drawing out of the doorj. 3 5 closed, and Fig. 8 is a broken section taken Angled metal strips p are used to form the at right angles to Fig. 7. grooves for the doorj and at the same time The light-proof envelop ct, Figs. 1 and 2, is support the plate. made in two parts, one (the inner part, shown hen the cell is placed in the camera and in Figs. et and 5) composed of a piece of stiff the door j drawn,its groove 70 engaging with 40 actinic light-proof cloth or strong paper or the bar f on the envelop-flap c draws it and othersuitable material of the size of the plate the flap 011 the face of the plate and rolls it h to be used, having its sides 0 and one end within the cell, all as shown in Fig. 7, and d turnedover, so as to form grooves,into which on the closing of the door recovers the plate. the plate I) is slipped. To the back of end d, The plate and its envelop can then be taken 45 having the groove, a covering-flap of lightout of the cell and placed in the pocket or proof cloth or paper (shown broken away in otherwise disposed of. Prepared in this way Fig. 4 and turned over in" Fig. 5) is secured, any number of plates can be carried by the which folds over the face of the dry-plate Z), operator, while only one cell is required. In- I00 placed in the grooves. A small bar f, (also stead of employing a separate cell it may be 50 indicated in Figs. 1 and 2,) of .wood or other built to the end of the camera and form an suitable material, is secured on the end of integral part of the same. this covering-flap 6 outside. The other or Havingdescribed our invention,we claim- 1. In a plate-cover for cameras, the con bin ation, with an envelop, the front of which is open, of a flexible shield secured at one end to the top thereof in position to cover the opening, and a bar of material permanently secured to the free end of the shield in position to he engaged by the door of the plate-holder.

2. In a plate-cover for cameras, the combination, with an envelop comprising two parts, one within the other, each of which is flanged upon its sides and at one end to form grooves, the ungrooved ends being arranged opposite to each other, and a flexible shield secured to the flanged end of the inner part and having its free end provided with means for engaging with the door of the plate-holder.

In a plate-cover for cameras, the combination,with an en velop,comprising two parts, one within the other, each of which is flanged upon its sides and at one end, the lower end of the inner part and the upper end of the outer part being ungrooved and the outer part being cut away at its nngrooved end, a stop on the inner part for fitting Within the cut-away portion of the outer part, and a flexibleshield secured to the grooved end of the inner part, the free end of which is provided with a strip for engaging with the door of the plate-holder.

4. In a plate-holder for cameras, the com hination, with a grooved frame adapted to hold a plate-envelop, of a back hinged thereto, a spring-catch secured to the back for engaging with the envelop, and a sliding door.

5. In a plate-holder for cameras, the combination with a grooved frame adapted to hold a plate-envelop, of a hack hinged thereto, a sprin -catch secured to the hack, the upper end or which is bent at an angle to engage with the envelop, and a sliding door.

6. In a plate-holder for cameras, the com hination, with a grooved frame, of a hinged door provided with a spring-catch, of a flanged plate-cover in the groove of the frame, a flexible shield secured thereto at one end in position to be moved in front of the plate, and a sliding door in the frame, the inner surface of which is adapted to engage with the free end of the shield and move it over the plate.

'7. In a plate-holder for cameras, the combination, with agrooved frame, of a plate-cover therein consisting of two flanged parts secured, one within the other, the inner one being provided with a flexible shield, a strip on the free end of the shield, a back hinged to the frame, a hooked catch thereon in position to engage with the top of the cover and prevent its movement, and a sliding door, the inner face of which is provided with a groove for the reception of the strip on the shield.

8. In a plate-holder for cameras, the combination, with a frame adapted to hold a plateenvelop, of a back for the same provided with a transparent peep-hole, a hooked catch on the back for engaging with the envelop, and a sliding door in front of the frame.

In testimony whereof we affix our signatures in presence of two witnesses.

FREDERICK MACKENZIE. GEORGE WISIIART. lVitnesses:

JonN FRASER, DONALD SINCLAIR. 

